"The total cost of $3$ sweetlimes and 6 oranges is ₹ $210 . "$ Show this statement as a linear equation in two varlables.

If $(2,3)$ is a solution of the equation $7 x-3 y=a$ and $(a, a+1)$ is a solution of the equation $2 x+y=b,$ find the values of $a$ and $b$

For equation $a x+b y+c=0,$ if $c=0$ then its graph is a line passing through the $\ldots \ldots \ldots$

Draw the graph of the linear equation $2 x+3 y=12$. At what points, the graph of the equation cuts the $x$ -axis and the $y$ -axis?

Express the following linear equation in the form $a x+b y+c=0$ and indicate the values of $a, b$ and $c$ in each case

$6 x-5 y=4.2 \overline{7}$